nvme: fix racy access to FDP placement id array

nvme_query_fdp_info() is called per-path and therefore prone to races.

It populates head->nr_plids/head->plids for fdp registration.
But nothing protects that pair from concurrent access - two paths scanning
the same namespace can race to populate it.

Avoid the race by moving this initialization work to nvme_alloc_ns_head()
which is called once per shared namespace.

Fixes: 30b5f20bb2dd ("nvme: register fdp parameters with the block layer")
Reported-by: Hari Mishal <harimishal1@gmail.com>
Link: https://lore.kernel.org/linux-nvme/20260725135111.14041-2-harimishal1@gmail.com/
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>

0 files changed, 0 insertions, 0 deletions